Weasel

Normal weasels (or ferrets, see below) are small mammals with long bodies, short legs, and pointed, toothy snouts. They are predatory animals, hunting those creatures smaller than themselves. They are cunning, crafty hunters, and gain surprise on 1-3 on 1d6. Once one bites prey (i.e. a living creature smaller than itself), it hangs on, rending with its teeth each round until the victim or the weasel is dead. Should one fail a morale check it will release its victim and flee. There are many varieties of normal-sized weasel, including several which are called ferrets; in some territories, the giant weasel is thus called a giant ferret. The only distinction is that those which are tamed are always called ferrets, though not all giant ferrets are tame. Various humanoid races as well as some fairy creatures are known to tame giant ferrets for use as guards or war-animals. Giant weasels resemble their more normally sized cousins, and other than their greater size they behave in exactly the same fashion.